包含标签：Java 的文章
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java – WebSphere 7. Inject EJBs from another application
I tried to inject EJB with @ EJB annotation: >When I inject an EJB into another EJB in the same ear, it works norma…… -
Java – could ThreadLocal be useful?
So I just saw someone try to use a ThreadLocal < atomicinteger > in some java code And it always seems useless: …… -
Zero padding and left padding integers in Java (non decimal format)
Has been answered for integers printed in decimal format, but I'm looking for an elegant way to do the same with integ…… -
Java – dynamic change persistence unit – JPA
persistence. The persistence unit in XML is created during the construction of the application Since I want to change …… -
Java GetClass () returns a class. How can we get a string?
When I use system out. Println (obj. Getclass()) it doesn't give me any errors Return a class type from getClass () as…… -
Java – unable to create eclipse data source to Oracle 12C. Jar But 11g’s work
When I open the data source Explorer window and try to create a new connection profile, I select "oracle", Oracle thin…… -
Java – PDF report with embedded HTML
We have a Java based system that can read data from the database, merge various data fields with preset xsl-fo tags, a…… -
Java – Eclipse: hover and disconnect from the debugging Perspective
Due to the upgrade of eclipse (Galileo build 20090920-1017), the value of the variable is no longer displayed in hover…… -
Is time regression enabled in Java 9 EA?
I've heard of it >Each major version of the JVM becomes faster (in some ways) > 9 modularity will lead to faster…… -
Set your own class as the key in Java HashMap
I have a class that I want to set as a key in HashMap I have implemented the CompareTo method of this class But when I…… -
The fastest way to write integer arrays to files in Java?
As the title says, I'm looking for the fastest way to write integer arrays to files Arrays vary in size and can actual…… -
Check whether the fastest method in string can be resolved to double in Java
I know there are a million ways to do this, but what's the fastest? This should include scientific notation Note: I'm …… -
Java – where the result set is stored when using JDBC and Oracle drivers
Once I use JDBC with the Oracle driver and run the select query, do I store the query results in Oracle memory or file…… -
Java – how to use the eclipse generated WebService client class?
I use eclipse Helios to create a web service client to consume an axis 1.4 web service The internal client package has…… -
How to set java system properties globally on OS X?
Short stories I need a system level approach to Java awt. The headless property is set to true for all Java calls That…… -
Java: what is jitc’s reflection on inflation?
I recently came across this interesting word and searched on the Internet to learn more However, the information I fou…… -
Java – in Apache POI 3.7, double values are written in numeric cells in a specific format
I need to write a double value in a numeric cell in a specific format. I mean, the generated XLS must have a numeric c…… -
java – Class. Field order returned by getfields()
Class. The Javadoc of getfields () said: "the elements in the returned array are not sorted, and there is no specific …… -
Java – JPA – eclipse link – how to change the default mode
I am using Weblogic and Oracle to program web applications public class MyCustomizer implements SessionCustomizer{ …… -
It’s slower than the sum of Java
This is the case cat sum100000000.cpp && cat sum100000000.java #include <cstdio> using namespace std; …… -
Java programming environment: Emacs or eclipse?
I'm new to Java. I need to build a programming environment (edit, compile, test, debug and deploy / make jar files) Th…… -
Java – how do I retrieve the last inserted value in my database?
Anyone can tell me about the query for the last inserted value in the database column The problem is that after using …… -
Java – why do some xhdpi phones only display images in / RES / drawable?
This is a scene There are folders: Drawable LDPI > drawable MDPI > drawable hdpi > drawable xhdpi Images (usu…… -
Java – deserialize immutablelist using gson
I use a lot of immutable collections, and I'm curious about how to deserialize them using gson No one answered. I foun…… -
Multithreading – how do I manage the return values of threads?
I created a class derived from TThread to execute queries in the background I want this class to be separate from the …… -
Multithreading — is it safe to call multiple threads of DLL function in a single application?
I write a server application in Delphi 2009 to realize several types of authentication Each authentication method is s…… -
Java – how can I fail Hudson / Jenkins if the sonar threshold is broken?
I'm using Maven to build my java application. Jenkins provides metrics for CI and sonar At present, I have a construct…… -
Java – docker settings
I'm reading docker today and even trying to run it on vagrant's laptop But I still don't know why, especially how to i…… -
How does Java embed virtual function boundaries?
I am reading some materials to explain whether Java can be faster than C, and I encounter the following quotation: "Ja…… -
Java – get an exit instruction from the library
To my surprise and fear, I just met system Line of exit (1); In the library I use I'm planning to contact the author o…… -
Guava’s immutablelist Is the builder thread safe?
Guava’s ImmutableList. What is the thread security of builder? Javadoc doesn't say Solution Although guava invariant c…… -
Java – why does jodatime and calendar return different results
Why did this test fail: DateTime dateTime = new DateTime(1997,01,00,DateTimeZone.UTC); long jodaMills = dateTime.g……